Finding the Fourth Proportional to 104,521.36, 144,242.16 and 56,777.44
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Solution
The fourth proportional to 104,521.36, 144,242.16 and 56,777.44 is: 78,354.32
Step by Step Solution
- Step 1: Write the proportion equation
104,521.36 : 144,242.16 = 56,777.44 : x - Step 2: Convert to fraction form
104,521.36/144,242.16 = 56,777.44/x - Step 3: Cross multiply
104,521.36x = 144,242.16 × 56,777.44 - Step 4: Simplify right side
104,521.36x = 8,189,700,584.87 - Step 5: Solve for x
x = 8,189,700,584.87/104,521.36 - Step 6: Final answer
x = 78,354.32
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.